Wilson Sons has brought Brazil’s most powerful escort tug into Porto Açu, where it is escorting and assisting in berthing very large ore carriers and container ships
Wilson Sons Rebocadores introduced the most powerful harbour, terminal and oceangoing escort tug in Brazil at the beginning of November 2018. WS Sirius was built by Wilson Sons Estaleiros, in Guarujá, Brazil, as an azimuth stern drive (ASD) tug for escorting large ships into coastal and offshore terminals.
Wilson Sons built this tug to a Damen design with a bollard pull of 90 tonnes. It is an ASD 3212 design escort tug with an overall length of 32 m and a beam of 12 m.
WS Sirius began operations in Porto Açu, in the north of the state of Rio de Janeiro after 22 months in construction and outfitting. This tug is capable of sailing longer distances, of more than 100 nautical miles, and in more adverse sea and weather conditions than previous escort tugs built by Wilson Sons.
This is useful to the operator as WS Sirius’ main operations will be assisting very large ore carriers into an offshore terminal at Porto Açu. According to Wilson Sons Rebocadores operational director Marcio Castro, one of its advanced features is a render recovery winch, which means WS Sirius can maintain a safe and constant distance from a towed vessel. “Together with the automated control of the pull on the towline, this reduces the possibility of line breakage during ship manoeuvres,” he said.
WS Sirius can reach 135 tonnes on the towing line in transverse arrest mode. “As an escort tug, it performs exceptionally well because of its design that co-operates in the manoeuvrability of towed ships at low and high speeds,” said Mr Castro. In reverse arrest mode it can achieve up to 180 tonnes. When connected to a vessel, this tugboat can speed up to 12 knots and 15 knots when just escorting.
WS Sirius has a FiFi1 class of fire-fighting system. In the engineroom, there is a pair of Caterpillar 3516C HD main engines driving two Rolls-Royce US 255 fixed pitch azimuthing thrusters.
“Adding WS Sirius brings our fleet to 76 tugs and consolidates our position as a leader in the Brazilian harbour towage market,” said Mr Castro. He expects tug operators in Brazil will need more of these powerful tugs because of the larger ships entering ports in the nation.
“Brazilian Ports have the challenge to operate 366-m container ships using the same access channels and port facilities,” he said. “Powerful tugs, such as WS Sirius, are the main solution for port authorities and pilots for finding ever-increasing performance in ports and terminals.”
Porto Açu is a major independent Brazilian port. It has multicargo bulk terminals, an oil terminal, bunkering facilities, container terminal, LNG hub, facilities for oil transhipments and a ship repair yard.
Wilson Sons Shipyards has also built four tugs for SAAM Smit Towage Brazil, which operates a fleet of 48 vessels in 15 ports and terminals along the Brazilian coast.
SAAM Smit took delivery of the first of these tugs, SST Aimore, in July 2017 and then SST Arua in October 2017. Both tugs were deployed at Petrobras oil terminals in Angra Dos Reis. The other two newbuildings, SST Arara and SST Aranã, were delivered in 2018 to operate in Santos port.
WS Sirius particulars
Owner: Wilson Sons Rebocadores
Shipbuilding: Wilson Sons Estaleiros
Design: ASD 3212
Operating port: Porto Açu
Bollard pull: 90 tonnes
Length, oa: 32 m
Beam: 12 m
Classification: +100 A1 escort tug, FiFi1
Main Engines: 2 x CAT 3516C HD
Propulsion: 2 x US255 FP
Winch: render recovery